摘要:
The invention relates to a tool for control measurement of the correct form of the teeth of helical gear wheels. A rack with the same pitch as the wheel to be control-measured rolls on top of the wheel in engagement with its teeth. An indicator whose height is adjustable has a measuring arm passing through a hole in the rack, so that its point slides on the side of a tooth on the gear wheel. The relative height of the indicator in relation to the rack is recorded.
摘要:
A feeler device has a feeler element pivoted on a carrier for measurement of relative movements between the element and carrier. The element can be located in alternative end positions from which the relative movements take place. The end position is selected by adjustment of a rotatable ring that has a camming surface acting on springs which provide the biassing action that causes one or other end position to be assumed.
摘要:
A large gear involute artifact assembled with mandrel used as physical datum of precision traceability and measurement transmission for large gear involute is proposed. The artifact comprises a large gear involute artifact stripe, a mandrel, a backing plate, a counterweight shaft, an adjustable counterweight ring, the adjustable screws of counterweight, the connecting screws for backing plate, the connecting screws for artifact and an eccentric multi-ball bearing. The structure and the rolled length of the large gear involute artifact assembled with mandrel fit the basic requirements of class-1 accuracy in the national standard of gear involute artifact GB/T 6467-2010 in China. It has advantages of long rolled length, adjustable center of mass, uniform datum, compact structure, and portability. It adopts lightweight design, which can be installed and transported by one person manually, and is suitable for the structural design of large gear involute artifact with base-circle diameter greater than 500 mm.
摘要:
A method and machine whereby utilizing both tactile (46) and non-contact (50) sensors or probes for workpiece (56) inspection and/or measurement results in significant cycle time savings while accuracy is maintained.
摘要:
A method and apparatus for carrying out contact measurement on at least one tooth flank of a gearwheel workpiece including the steps of: predetermining or defining a maximum region relating to the tooth flank, predetermining or defining a critical region relating to the tooth flank that overlaps the maximum region at least in part, executing relative movements of a probe of a measuring apparatus to guide the probe along the tooth flank to obtain actual measured values with a first resolution for a plurality of locations on the tooth flank within the maximum region, and obtain actual measured values with a second resolution for a plurality of locations on the tooth flank within the critical region, wherein the second resolution is higher than the first resolution.
摘要:
A method for determining the precision of gears includes steps of providing a gear pair; performing a single flank test for the gear pair, to generate a testing signal graph; decomposing the testing signal graph into a plurality of intrinsic-mode-function graphs; selecting a first function graph and a second function graph from the intrinsic-mode-function graphs; measuring the amplitude of vibration of the first function graph, to get a profile error of gear; combining the first and second function graphs to form a graph of function combination; calculating an adjacent pitch error and an accumulated pitch error by means of the graph of function combination; and defining the gear precision for one of the gear pair according to the profile error of gear, the adjacent pitch error and the accumulated pitch error.
摘要:
A measuring apparatus for measuring a workpiece (2), comprising a turntable (1) for receiving the workpiece (2), a base plate (3) with a turntable bearing, and a foundation (12) on which the base plate (3) rests. The turntable (1) comprises a vertical shaft (W) which is situated beneath the turntable (1) and is held by means of the turntable bearing in the base plate (3). The turntable baring comprises an axial bearing (9) at a bottom face end (13) of the shaft (W) which is spaced from the turntable (1). The shaft (W) is rotatably held on the axial bearing in such a way that the weight (G) of the workpiece (2), when received by the turntable (1), is introduced into the foundation (12) through the turntable (1), the shaft (W) and the axial bearing (9).